Explore our high-performance line of brighteners, passivation agents, and specialized chemistry solutions engineered to optimize surface finish quality.
Optimizing electrodeposition through precise molecular control and dynamic interface engineering.
In high-end manufacturing, copper electroplating is a foundational building block for multi-layer PCB fabrication, semiconductor packaging, automotive plastics metallization, and premium hardware finishing. An acid copper brightener functions as a critical organic additive system dissolved in acid copper sulfate baths to control the rate of copper ion deposition at the cathode interface.
Without high-grade brighteners, copper ions deposit rapidly on high-current density areas (such as corners and edges), yielding a dull, rough, or nodular crystalline structure that lacks mechanical strength and aesthetic value. High-quality brightener packages prevent this by introducing specialized organic surfactants that temporarily polarize the cathode surface, promoting a micro-crystalline deposit structure. This results in extreme mirror brightness, extraordinary leveling capabilities, and ductile deposits that resist thermal stress cracks.
As a leading developer, Suzhou Hiyie Chemical Co., Ltd. produces advanced brightening agents designed to work synergistically. Our carrier, brightener, and leveling systems maintain stable cathodic polarization even under high current density variations, guaranteeing a uniform and flawless copper layer across complex geometries.
Our formulas dynamically modify the electrical double layer at the cathode surface. By increasing the activation overpotential, copper ions are forced to deposit uniformly across micro-recesses, avoiding localized dendritic growth.
Active ingredients selectively adsorb on micro-peaks, suppressing copper deposition at protruding points while allowing rapid fill inside scratches, pores, and micro-vias.
How our electrochemical solutions drive performance across diverse global industrial sectors.
Exterior trims, grilles, and emblems undergo multi-layer plating (Copper-Nickel-Chrome). The acid copper layer serves as a crucial leveling and corrosion-barrier coating, filling micro-porosities in ABS plastic substrates prior to nickel plating.
Critical in printed circuit board (PCB) fabrication, via-filling, and blind-via plating. Our acid copper brighteners facilitate void-free bottom-up copper filling of high-aspect-ratio micro-vias, securing electronic connections.
Heavy-duty hydraulic cylinders, printing rollers, and wear-resistant components rely on acid copper undercoats for high adhesion, elasticity, and optimal thermal conductivity under extreme operating conditions.
A benchmark formula engineered for rapid deposition rates, superb throwing power, and simple maintenance protocols.
Our signature 672 High-Speed Bright Acid Copper Plating formulation is widely recognized for its high tolerance to temperature fluctuations and contamination. Below is the typical bath composition and operating parameter envelope recommended for achieving optimal industrial-grade electrodeposition:
| Parameter Component | Standard Range | Optimum Concentration / Setpoint | Function & Control Influence |
|---|---|---|---|
| Copper Sulfate (CuSO₄ · 5H₂O) | 180 – 240 g/L | 210 g/L | Provides copper ions; controls primary deposition limits. |
| Sulfuric Acid (H₂SO₄, sp. gr. 1.84) | 50 – 70 g/L | 60 g/L | Maximizes bath conductivity; prevents anode polarization. |
| Chloride Ion (Cl⁻) | 30 – 80 ppm | 50 ppm | Collaborates with brightener to promote uniform crystal growth. |
| 672 Make-up / Carrier Agent | 6 – 10 mL/L | 8 mL/L | Forms suppressive film on high-current density peaks. |
| 672 Brightener Additive | 0.5 – 1.0 mL/L | 0.7 mL/L | Refines grain boundaries, delivering high mirror lustre. |
| 672 Leveler Additive | 0.2 – 0.5 mL/L | 0.3 mL/L | Fills micro-grooves and defects on substrate surface. |
| Bath Temperature | 18 – 32 °C | 25 °C | Directly impacts brightener consumption and grain growth. |
| Cathode Current Density | 1.5 – 5.5 A/dm² | 3.5 A/dm² | Defines deposition rate and micro-throwing index. |
Years of R&D Experience
Global Industrial Clients
Advanced R&D Centers
RoHS & REACH Compliant
Navigating evolving supply chains, environmental standards, and modern application challenges.
The global surface finishing market is undergoing rapid transformations. As environmental regulations become increasingly stringent across North America, the European Union, and the Asia-Pacific region, the demand for sustainable, high-efficiency electroplating chemistry has reached an all-time high. Conventional systems containing toxic organic carriers or relying on cyanide bases are phased out in favor of eco-friendly, biodegradable alternatives.
Additionally, manufacturing trends like EV electrification and high-frequency 5G telecommunications demand higher copper purity and mechanical ductility. Even minor impurities or internal stresses in copper deposits can lead to delamination, micro-voids, and signal degradation. Consequently, manufacturing leaders require chemical partners capable of supplying stable, highly pure additives with reliable consistency.
At Suzhou Hiyie Chemical, we address these challenges through state-of-the-art manufacturing facilities, strict batch-to-batch quality control, and a resilient logistics network. This ensures global manufacturers receive high-performance additives when and where they need them.
A professional manufacturer of high-quality organic chemicals and electroplating additives.
SUZHOU HIYIE CHEMICAL CO., LTD specializes in R&D and production of advanced surface treatment chemicals. Our extensive product portfolio covers consumer electronics, communication equipment, the semiconductor industry, automotive hardware, craft gifts, and more.
To solve complex industry challenges, we collaborate with leading chemical enterprises and universities, establishing a mobile R&D center. Suzhou Hiyie Chemical has set up specialized R&D facilities in Wuhan and Shanghai, with a marketing and technical support network covering the Pearl River Delta, Yangtze River Delta, and Bohai Rim regions.
Our solutions are trusted and recognized by major global enterprises, including Foxconn Technology Group, Qinghai Salt Lake Group, Chint Group, Hongbao Group, Stanley Group, and Shifeng Group, earning us a solid reputation for excellence and reliability in surface finishing chemistry.
Uncompromising quality, expert technical support, and sustainable chemistry solutions.
We recruit and develop industry-leading chemists and sales engineers to provide expert technical guidance, bath troubleshooting, and customized product synthesis.
Our dynamic research frameworks allow us to customize chemical parameters and formulations, meeting the most demanding technical requirements of our clients.
We are dedicated to eco-friendly production, offering low-VOC, cyanide-free, and highly degradable formulations that ease wastewater treatment demands.
Our dedicated team provides professional pre-sale evaluations, bath analysis, and responsive after-sales service to ensure consistent plating quality.
Enabling seamless integration into localized production environments while meeting global safety requirements.
Every manufacturing facility operates under unique ambient and environmental conditions. Our technical team works closely with plant managers to adjust bath chemistry based on local water profiles (e.g., calcium, magnesium, or carbonate levels) and line configurations. Whether you manage manual barrel systems or high-speed automated rack-plating setups, our formulations are optimized to deliver consistent brightness and thickness distribution.
We ensure all products align with modern safety and environmental expectations. By offering REACH and RoHS compliant chemicals, we help your facility meet local wastewater standards, particularly regarding heavy metals and persistent organic compounds. We also provide safety training and bath maintenance guides to help operators handle all electroplating additives safely and responsibly.
As microelectronics demand tighter tolerances, our research focuses on developing high-performance organic additives for next-generation applications, such as sub-micron trench filling, micro-via filling, and smart dosing systems. We are also advancing our line of cyanide-free copper plating and trivalent zinc passivation options to support sustainable manufacturing.
Answers to common questions about bath maintenance, usage, and optimization for acid copper brighteners.
Browse our broader portfolio of zinc, nickel, and alloy chemistry engineered for professional metal finishers.
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The Snake ushers in blessings as we bid the old year farewell; The Horse brings spring as we embark on a new journey. The New Year bell rings the prelude to progress, marking another milestone in our commitment to delivering top-tier electroplating solutions worldwide.
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